Delta's Fuel Gamble Pays Off, and the Industry Exhales

Delta Air Lines walked into the summer's first earnings print carrying the largest quarterly fuel bill in its history. It walked out having reaffirmed its full-year guidance, lifted its dividend and dragged the entire sector up with it.

The Atlanta carrier reported $19.8 billion in GAAP operating revenue for the June quarter and $2.44 in earnings per share, with $1.56 adjusted — ahead of the $1.51 analysts had penciled in. Full-year adjusted EPS guidance held at $6.50 to $7.50, and management announced a 15 percent dividend increase beginning in the September quarter. The stock climbed 3.6 percent pre-market and pulled peers with it, extending Delta's year-to-date gain to roughly 28 percent.

The number that should have broken the quarter did not. Delta's adjusted fuel price hit $3.93 per gallon, up 75 percent year over year. Adjusted fuel expense reached $4.4 billion. The offset came from revenue that refused to yield: up 14 percent on approximately 1 percent capacity growth.

That ratio is the story. Premium revenue rose 17 percent, loyalty revenue 19 percent, and American Express payments 16 percent to $2.4 billion. Chief executive Ed Bastian's argument, made repeatedly this week, is that none of it reverses when oil does. He told CNBC that fares would stay firm despite the recent slide in fuel prices, calling the pricing sustainable and pointing to a more disciplined industry that has learned not to add capacity the moment crude falls. Delta has passed roughly 60 percent of the higher fuel bill to customers and expects to reach close to 100 percent this quarter.

The subtext is Spirit. With the ultra-low-cost carrier gone and low-cost capacity down 9.1 percent into the July 4 window against 2 percent at full-service airlines, the competitive floor has moved. Delta is the first major to report. Whether United and American can replicate the trick is the question that defines the rest of the summer.